CN211900603U - Face combination shield structure hole of hoist enclosed construction forever - Google Patents
Face combination shield structure hole of hoist enclosed construction forever Download PDFInfo
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- CN211900603U CN211900603U CN201921425794.0U CN201921425794U CN211900603U CN 211900603 U CN211900603 U CN 211900603U CN 201921425794 U CN201921425794 U CN 201921425794U CN 211900603 U CN211900603 U CN 211900603U
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- 238000010276 construction Methods 0.000 title claims abstract description 67
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 65
- 239000010959 steel Substances 0.000 claims abstract description 65
- 238000007789 sealing Methods 0.000 claims abstract description 34
- 239000000126 substance Substances 0.000 claims description 22
- 239000011150 reinforced concrete Substances 0.000 claims description 4
- 210000002105 tongue Anatomy 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 18
- 239000004567 concrete Substances 0.000 abstract description 15
- 238000009415 formwork Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 239000003973 paint Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a face to combine shield structure hole for hoist enclosed construction forever relates to underground structure construction technical field. The method aims to solve the problem that the continuity and the safety of construction in a tunnel cannot be guaranteed when a floor type formwork bent frame supporting system is adopted to implement shield hoisting hole sealing construction. It includes: the top plate is arranged at the top of the working well and is provided with a shield hoisting hole; the steel structure supporting platform is arranged at the bottom of the top plate, the rear embedded part is arranged on the side wall of the working well and the side surface of the ring beam, two ends of the main beams are fixedly connected with the rear embedded part, the secondary beams are fixedly connected between two adjacent main beams, and the panel is laid and fixed on the surface of a supporting frame consisting of the main beams and the secondary beams; and the sealing layer is arranged at the top of the steel structure supporting platform. The sealing method comprises the following steps: installing a plurality of rear embedded parts on the side wall of the working well and the side surface of the ring beam, connecting the main beams to the rear embedded parts of the working well, connecting the secondary beams between two adjacent main beams, paving a panel on a support frame constructed by the main beams and the secondary beams, and pouring closed layer concrete by taking the panel as a bottom die.
Description
Technical Field
The utility model relates to an underground structure construction technical field, in particular to face combination shield structure hole for hoist enclosed construction forever.
Background
At present, the quantity of automobile reserves in China is continuously increased, the problem of urban congestion is increasingly serious, the enhancement of rail transit construction is an effective mode for relieving traffic pressure, and particularly, the huge transport capacity of subways can greatly improve the traveling efficiency of urban population, so that the construction of the subways in various cities is very popular.
The shield method is the most common construction method in subway construction, firstly, working wells, namely an originating well and a receiving well, are respectively established at two ends of a tunnel, construction holes reserved on a top plate of the working wells are generally also called shield hoisting holes and used for the starting and receiving of a shield machine, and after the tunnel is communicated and paved, the shield hoisting holes on the top plate of the working wells are sealed, so that a complete underground space is formed; however, when the conventional floor type formwork bent frame support system is used for shield hoisting hole closing construction, series of process flows such as formwork bent frame erection, reinforcement bar binding, concrete pouring, concrete curing, formwork bent frame dismantling, material dismantling and material transportation out of the tunnel can be completed within at least one month, and as the floor type formwork bent frame support system occupies the space of the whole tunnel, a construction rail car in the tunnel cannot normally pass, continuous construction of the tunnel is affected, and the construction period is prolonged integrally.
Therefore, in the shield hoisting hole closing construction, how to ensure the continuity and safety of the construction in the tunnel is a technical problem to be solved by technical personnel in the field.
Disclosure of Invention
The method aims to solve the problem that the whole construction period is prolonged because the continuity and the safety of construction in a tunnel cannot be ensured by adopting the existing floor type formwork bent frame supporting system to implement closed construction of a shield hoisting hole. The utility model aims at providing a face to combine shield structure hole for hoist enclosed construction forever, erect steel structure supporting platform as interim support at the shield hole for hoist bottom of roof to steel structure supporting platform pours concrete as the die block and seals the construction and need not to demolish as permanent structure, has not only reduced the consumption of material and manpower, and can ensure that the interior railcar of tunnel is normally current in the construction period moreover, and each process can link up smoothly in the tunnel, thereby has shortened construction period.
The utility model provides a technical scheme that its technical problem adopted is, faces combination shield structure hole for hoist enclosed construction forever, it includes:
the top plate is arranged at the top of the working well, and a shield hoisting hole is formed in the middle of the top plate;
the steel structure supporting platform is arranged at the bottom of the top plate and comprises main beams, secondary beams, a panel and a rear embedded part, the rear embedded part is arranged on the side wall of the top of a working well and the side surface of a ring beam, the main beams are transversely arranged in the working well at intervals, two ends of each main beam are fixedly connected with the rear embedded part, the secondary beams are longitudinally and fixedly connected between two adjacent main beams at intervals, the main beams and the secondary beams which are arranged in a criss-cross mode form a supporting frame, the panel is laid and fixed on the upper surface of the supporting frame, and the upper surface of the panel is attached to the lower surface of the top plate;
the sealing layer is arranged at the top of the steel structure supporting platform, the sealing layer is matched with the size of the shield hoisting hole, the sealing layer is flush with the upper surface of the top plate, and the sealing layer and the top plate are both of a reinforced concrete structure.
The utility model discloses a face combination shield hole of hoisting enclosed construction forever, erect steel structure supporting platform as interim support at the shield hole of roof bottom, and regard the panel of steel structure supporting platform as the die block concreting and form the seal layer of shield hole of hoisting, steel structure supporting platform and seal layer all need not demolish as permanent structure, that is to say, in the course of construction, shield hole of hoisting still possesses the original function of being convenient for railcar to pass in and out the tunnel, after the construction, shield hole of hoisting enclosed construction is as a part of building structure, thereby avoid repeated setting, reduce the consumption of material and manpower, therefore call as the combination structure of facing forever, adopt the combination shield hole of hoisting enclosed construction forever of the utility model to replace traditional full hall bent formwork support system, steel structure supporting platform passes through the postposition and buries the piece rigid coupling in the working well, do not occupy the tunnel space below the shield hole of hoisting, normal passing of rail cars in the tunnel can be guaranteed during construction, all processes in the tunnel can be smoothly connected, and the construction period is shortened; and the steel member of steel structure supporting platform can be processed by the mill in advance according to shield hole hoisting drawing and on-the-spot actual measurement, and the steel member standard is high, and construction quality is stable controllable, only needs hoist and mount and welding operation on the scene, has reduced the field work volume, and the construction safety risk is low.
Preferably, the rearmounted piece of burying includes rearmounted steel sheet and a plurality of chemical crab-bolt, rearmounted steel sheet closely laminate in the working well lateral wall, rearmounted steel sheet is equipped with a plurality of holes that link up, the working well lateral wall is implanted to the one end of chemical crab-bolt, the other end of chemical crab-bolt runs through behind the hole of rearmounted steel sheet with rearmounted steel sheet welded fastening.
Preferably, the girder tip with it still is equipped with first connecting plate to bury between the piece to rearmounted, first connecting plate is followed girder length direction sets up, the one end of first connecting plate with run through the chemical crab-bolt welded fastening of rearmounted steel sheet, the other end of first connecting plate with the tip welded fastening of girder.
Preferably, second connecting plates are symmetrically arranged on two sides of the web plate of the main beam, the secondary beam is vertically arranged between the two adjacent main beams, and two ends of the secondary beam are respectively welded and fixed with the second connecting plates located on two sides of the secondary beam.
Preferably, the bottom end of the side wall of the shield hoisting hole of the top plate is further fixedly connected with a plurality of pre-buried grooves and tongues, and the sealing layer is fixedly connected with the pre-buried grooves and tongues into a whole.
Preferably, the secondary beam is flush with the upper surface of the main beam.
Drawings
Fig. 1 is a schematic view of an embodiment of the permanent temporary combined shield hoisting hole sealing structure of the present invention;
fig. 2 is a plan view of a steel structure supporting platform in an embodiment of the permanent temporary combined shield hoisting hole sealing structure of the utility model;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
fig. 4 is the utility model discloses face combination shield structure hole for hoist enclosed construction's schematic structure forever.
The numbers in the figures are as follows:
a permanent-temporary combined shield hoisting hole sealing structure 10; a working well 11; a ring beam 12; a top plate 13; a rear insert 14; a rear steel plate 141; a chemical anchor 142; a main beam 15; a hoisting hole 151; a first connecting plate 152; a secondary beam 16; the second connecting plate 161; a panel 17; a sealing layer 18; pre-embedding a rabbet 181; a truck crane 20; a tunnel 30.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific embodiments. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention. For convenience of description, the directions of "up" and "down" in the following description are the same as the directions of "up" and "down" in the drawings, but this should not be construed as limiting the technical solution of the present invention.
This embodiment uses the closed construction of some circular tunnel 30 top shield hole as an example, and shield hole coincides with the central line of circular tunnel 30 longitudinal section, and the following combines fig. 1 to fig. 4 to explain the utility model discloses a face forever and combine shield hole of hoist enclosed construction 10, it includes:
the top plate 13 is arranged at the top of the working well 11, and a shield hoisting hole is formed in the middle of the top plate 13;
the steel structure supporting platform is arranged at the bottom of the top plate 13 and comprises main beams 15, secondary beams 16, a panel 17 and rear embedded parts 14, the rear embedded parts 14 are arranged on the side wall of the top of the working well 11 and the side surface of the ring beam 12, the main beams 15 are transversely arranged in the working well 11 at intervals, two ends of each main beam 15 are fixedly connected with the rear embedded parts 14, the secondary beams 16 are longitudinally and fixedly connected between every two adjacent main beams 15 at intervals, the main beams 15 and the secondary beams 16 which are arranged in a criss-cross mode form a supporting frame, the panel 17 is laid and fixed on the upper surface of the supporting frame, and the upper surface of the panel 17 is attached to the lower surface of the;
and the sealing layer 18 is arranged at the top of the steel structure supporting platform, the sealing layer 18 is matched with the size of the shield hoisting hole, the sealing layer 18 is flush with the upper surface of the top plate 13, and the sealing layer 18 and the top plate 13 are both of a reinforced concrete structure.
The utility model discloses a face combination shield hole of hoisting enclosed construction 10 forever, erect steel structure supporting platform as interim support at the shield hole of roof 13 bottom, and regard as the die block concreting and form the seal 18 of shield hole of hoisting with steel structure supporting platform's panel 17, steel structure supporting platform and seal 18 all need not to be demolished as permanent structure, that is, in the work progress, the shield hole of hoisting still possesses the original function of being convenient for railcar to pass in and out tunnel 30, after the construction, the shield hole of hoisting enclosed construction is as a part of building structure, thereby avoid the repeated setting, reduced the consumption of material and manpower, therefore call as the combination structure forever, adopt the utility model's combination shield hole of hoisting enclosed construction 10 forever to replace traditional full hall framed bent formwork support system forever, steel structure supporting platform passes through the rearmounted buried piece 14 rigid coupling in working well 11, the space of the tunnel 30 below the shield hoisting hole is not occupied, normal passing of a rail car in the tunnel 30 during construction can be guaranteed, all processes in the tunnel 30 can be smoothly connected, and the construction period is shortened; and the steel member of steel structure supporting platform can be processed by the mill in advance according to shield hole hoisting drawing and on-the-spot actual measurement, and the steel member standard is high, and construction quality is stable controllable, only needs hoist and mount and welding operation on the scene, has reduced the field work volume, and the construction safety risk is low.
As shown in fig. 2 and 3, the rear embedded part 14 includes a rear steel plate 141 and a plurality of chemical anchors 142, the rear steel plate 141 is closely attached to the sidewall of the working well 11, the rear steel plate 141 has a plurality of through holes, one end of the chemical anchor 142 is implanted into the sidewall of the working well 11, and the other end of the chemical anchor 142 penetrates through the through holes of the rear steel plate 141 and is then welded and fixed with the rear steel plate 141. The rear embedded part 14 is fastened to the side wall of the working well 11 through a chemical anchor bolt method, so that the steel structure supporting platform can be stably and reliably fixed to the side wall of the working well 11.
With reference to fig. 2 and fig. 3, the top of the main beam 15 is symmetrically provided with hoisting holes 151 for facilitating the connection of the steel wire rope of the truck crane 20 with the main beam 15 and the hoisting, a first connecting plate 152 is further disposed between the end of the main beam 15 and the rear embedded part 14, the first connecting plate 152 is disposed along the length direction of the main beam 15, one end of the first connecting plate 152 is welded and fixed to the chemical anchor bolt 142 penetrating through the rear steel plate 141, and the other end of the first connecting plate 152 is welded and fixed to the end of the main beam 15; the two sides of the web plate of the main beam 15 are also symmetrically provided with second connecting plates 161, the secondary beam 16 is vertically arranged between the two adjacent main beams 15, and the two ends of the secondary beam 16 are welded and fixed with the second connecting plates 161 positioned at the two sides of the secondary beam. The main beams 15 and the secondary beams 16 which are arranged in a criss-cross mode are connected into a whole through the second connecting plate 161 and are connected with the rear embedded part 14 on the side wall of the working well 11 through the first connecting piece, so that the operation is safe and convenient, and the connection is stable and reliable.
Better, the upper surface parallel and level of secondary beam 16 and girder 15 can provide stable holding surface for panel 17, is favorable to shield structure hole for hoist enclosed construction's overall stability.
As shown in fig. 1, the bottom end of the side wall of the shield hoisting hole of the top plate 13 is further fixedly connected with a plurality of pre-buried grooves 181, the sealing layer 18 after concrete pouring is fixedly connected with the pre-buried grooves 181 into a whole, and the pre-buried grooves 181 also have the function of supporting the sealing layer 18, so that the connection stability between the sealing structure of the shield hoisting hole and the main structure is further ensured.
The following description is provided with reference to fig. 1 to 4 for the construction process of the combined shield hoisting hole sealing structure, which includes the following steps:
s1: a plurality of rear embedded parts 14 are arranged on the side wall of the top of the working well 11 and the side surface of the ring beam 12;
s2: installing a steel structure supporting platform, parking a truck crane 20 at a safe distance of the outer surface of a foundation pit, determining the type selection of the truck crane 20 according to the maximum component, calculating and selecting the stress of a steel wire rope, hoisting a single component by two points to ensure the stability of the component in the air hoisting displacement process, firstly hoisting main beams 15 in sequence, arranging the main beams 15 in a working well 11 transversely at intervals, welding rear embedded parts 14 at two sides of the main beams 15, hoisting secondary beams 16 in sequence, longitudinally arranging the secondary beams between two adjacent main beams 15, welding two ends of the secondary beams 16 with the main beams 15, forming a supporting frame by the main beams 15 and the secondary beams 16 which are arranged in a criss-cross manner, transmitting the stress of the steel structure supporting platform to the side wall of the working well 11, laying and fixing a panel 17 on the upper surface of the supporting frame, and attaching the upper surface of the panel 17 to;
s3: the original structure diagram of the top plate 13 is used as a basis, the panel 17 of the steel structure supporting platform is used as a bottom die, reinforcing steel bars are bound on the bottom die, concrete is poured, the poured sealing layer 18 is flush with the upper surface of the top plate 13, waterproof construction is carried out after the concrete curing of the sealing layer 18 is finished, and various procedures such as follow-up backfilling are carried out after waterproof engineering is qualified.
At first, bury a plurality of backs at 11 lateral walls of working well and 12 side-mountings of collar tie beam 14, with the horizontal and interval connection of many girders 15 in 11 rearmounted buried 14 of working well, connect secondary beam 16 between two adjacent girders 15, then, lay panel 17 on the braced frame that girder 15 and secondary beam 16 found, and pour the concrete of enclosed layer 18 as the die block with this panel 17, thereby accomplish the closed construction of shield hole hoist, the utility model discloses a permanent steel construction supporting platform combines the original reinforced concrete structure of roof 13 to seal the hole construction, has following beneficial effect:
1. the permanent steel structure supporting platform is arranged on the side wall of the working well 11 at the bottom of the shield hoisting hole to serve as a supporting system for hole sealing construction, the traditional full-hall bent frame template supporting system is replaced, the space of the tunnel 30 below the shield hoisting hole is not occupied, the normal passing of a rail car in the tunnel 30 during construction is guaranteed, the construction operation of other work types in the tunnel 30 is hardly influenced, all the work procedures can be smoothly connected for construction, the construction period is shortened, and the construction safety is guaranteed;
2. each steel member of the steel structure supporting platform can be processed in advance by a factory according to a shield hoisting hole drawing and field actual measurement, the steel member produced in the factory has high standard, the construction quality is stable and controllable, only hoisting and welding operation is needed on the field, and compared with a template bent frame method, the construction method has the advantages of reducing the field operation amount, being high in construction speed, convenient to implement and low in safety risk.
3. By adopting the method for closing the combined shield hoisting hole, a large amount of resources and energy are saved, construction waste is reduced, construction cost is saved, and the method meets the requirements of green buildings;
4. adopt the utility model discloses a face to combine shield structure hole of hoist sealing method forever, mechanized, degree of automation is high, compares template framed bent method, and operation workman working condition is improved comprehensively.
In the step S1, the rear embedded part 14 is fixed to the sidewall of the working well 11 by using the chemical anchor bolt 142; firstly, drilling a hole in the top side wall of the working well 11 and the side surface of the ring beam 12 by using a water drill, grinding the surface of the hole by using a grinder after the drilling is finished, ensuring that the rear steel plate 141 can be tightly attached to the side wall of the working well 11 and the side surface of the ring beam 12, implanting a chemical anchor bolt 142 into the drilled hole, ensuring that the anchoring depth meets the calculation requirement, then injecting a chemical adhesive into the drilled hole, forming a hole in the rear steel plate 141 according to the actual position of the on-site chemical anchor bolt 142, enabling the other end of the chemical anchor bolt 142 to penetrate through the rear steel plate 141, adding a gasket on the rear steel plate 141 to enable the chemical anchor bolt to be welded and fixed with the chemical anchor bolt 142, determining the specification and the anchoring depth of the rear embedded part 14 by stress calculation, and avoiding the internal reinforcing steel bars of the working well 11 and the ring beam 12 when the rear embedded part 14 is provided.
In the step S2, a first connection plate 152 is further disposed between the end of the main beam 15 and the rear embedded part 14, the first connection plate 152 is disposed along the length direction of the main beam 15, the end of the main beam 15 and the chemical anchor bolt 142 passing through the rear steel plate 141 are respectively welded and fixed to the first connection plate 152, and the first connection plate 152 and the rear steel plate 141 are connected by a T-shaped butt weld, with a first-class weld.
In the step S2, the second connecting plates 161 are symmetrically disposed on two sides of the web of the main beam 15, the secondary beam 16 is disposed between two adjacent main beams 15, and two ends of the secondary beam 16 are welded to the second connecting plates 161 on two sides of the secondary beam.
The first connecting plate 152 and the main beam 15, and the second connecting plate 161 and the secondary beam 16 are welded by a three-sided fillet weld, so as to improve the connection strength between the components.
In the implementation, the main beam 15 and the secondary beam 16 are both made of I-steel, and finish paint is coated after the construction of the support frame constructed by the main beam 15 and the secondary beam 16 is finished; the panel 17 adopts the patterned steel plate, the thickness of the patterned steel plate needs to be calculated and determined according to the stress of the top plate 13, in addition, finish paint coating needs to be carried out after the patterned steel plate is laid, the finish paint is a paint with excellent weather resistance, and the color does not change, lose light, bubble or crack under severe weather conditions, thereby ensuring the construction quality.
In the step S3, the slope-type layered casting of concrete is adopted, during the layer-by-layer casting process, the second layer of concrete is cast before the initial setting of the first layer of concrete, and the concrete is vibrated for the second time before the vibration limit, so that the cracks caused by the concrete settlement are prevented, the compactness of the concrete is increased, the compressive strength of the concrete is improved, and the crack resistance is improved.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, so that any changes and modifications made by those skilled in the art according to the above disclosure are all within the scope of the appended claims.
Claims (6)
1. Face combination shield structure hole for hoist enclosed construction forever, its characterized in that includes:
the top plate is arranged at the top of the working well, and a shield hoisting hole is formed in the middle of the top plate;
the steel structure supporting platform is arranged at the bottom of the top plate and comprises main beams, secondary beams, a panel and a rear embedded part, the rear embedded part is arranged on the side wall of the top of a working well and the side surface of a ring beam, the main beams are transversely arranged in the working well at intervals, two ends of each main beam are fixedly connected with the rear embedded part, the secondary beams are longitudinally and fixedly connected between two adjacent main beams at intervals, the main beams and the secondary beams which are arranged in a criss-cross mode form a supporting frame, the panel is laid and fixed on the upper surface of the supporting frame, and the upper surface of the panel is attached to the lower surface of the top plate;
the sealing layer is arranged at the top of the steel structure supporting platform, the sealing layer is matched with the size of the shield hoisting hole, the sealing layer is flush with the upper surface of the top plate, and the sealing layer and the top plate are both of a reinforced concrete structure.
2. The permanent adjacent combined shield hoisting hole sealing structure according to claim 1, characterized in that: the rearmounted piece of burying includes rearmounted steel sheet and a plurality of chemical crab-bolt, rearmounted steel sheet closely laminate in the working well lateral wall, rearmounted steel sheet is equipped with a plurality of holes that link up, the working well lateral wall is implanted to the one end of chemical crab-bolt, the other end of chemical crab-bolt runs through behind the hole of rearmounted steel sheet with rearmounted steel sheet welded fastening.
3. The permanent adjacent combined shield hoisting hole sealing structure according to claim 2, characterized in that: the girder tip with it still is equipped with first connecting plate to bury between the piece to rearmounted, first connecting plate is followed girder length direction sets up, the one end of first connecting plate with run through the chemical crab-bolt welded fastening of rearmounted steel sheet, the other end of first connecting plate with the tip welded fastening of girder.
4. The permanent adjacent combined shield hoisting hole sealing structure according to claim 1, characterized in that: the two sides of the main beam web plate are symmetrically provided with second connecting plates, the secondary beams are vertically arranged between the two adjacent main beams, and the two ends of each secondary beam are respectively welded and fixed with the second connecting plates positioned on the two sides of the secondary beam.
5. The permanent adjacent combined shield hoisting hole sealing structure according to claim 1, characterized in that: the bottom end of the side wall of the shield hoisting hole of the top plate is fixedly connected with a plurality of pre-buried grooves and tongues, and the sealing layer is fixedly connected with the pre-buried grooves and tongues into a whole.
6. The permanent adjacent combined shield hoisting hole sealing structure according to claim 1, characterized in that: the secondary beam is flush with the upper surface of the main beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921425794.0U CN211900603U (en) | 2019-08-29 | 2019-08-29 | Face combination shield structure hole of hoist enclosed construction forever |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921425794.0U CN211900603U (en) | 2019-08-29 | 2019-08-29 | Face combination shield structure hole of hoist enclosed construction forever |
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| Publication Number | Publication Date |
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| CN211900603U true CN211900603U (en) | 2020-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921425794.0U Expired - Fee Related CN211900603U (en) | 2019-08-29 | 2019-08-29 | Face combination shield structure hole of hoist enclosed construction forever |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110552706A (en) * | 2019-08-29 | 2019-12-10 | 上海建工七建集团有限公司 | Permanent-temporary combined shield hoisting hole sealing structure and method |
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2019
- 2019-08-29 CN CN201921425794.0U patent/CN211900603U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110552706A (en) * | 2019-08-29 | 2019-12-10 | 上海建工七建集团有限公司 | Permanent-temporary combined shield hoisting hole sealing structure and method |
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Granted publication date: 20201110 |